题目内容：
不发火（防爆的）面层采用的碎石是以金属或石料撞击时不发生火花为合格。（ ）
参考答案：
选择题：不发火（防爆的）面层采用的碎石是以金属或石料撞击时不发生火花为合格。（ ）
- 题目分类：国家开放大学-建筑工程质量检验
- 题目类型：选择题
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